| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2025: In-Situ Characterization Techniques
|
| Presentation Title |
Multiscale Characterization of Micron-Scale Plasticity in Hcp Metals |
| Author(s) |
Michal Knapek |
| On-Site Speaker (Planned) |
Michal Knapek |
| Abstract Scope |
It has been found recently that plastic deformation of solids is not a smooth and continuous process. The elementary deformation events (dislocation avalanches, twinning) are typically concealed in the deformation curves due to the simultaneous plastic activity at many locations. However, modern techniques, such as acoustic emission and high-resolution/ultra-fast imaging, allow for detailed characterization of the activity of deformation mechanisms. We utilize these techniques to characterize metallic materials at macro- down to micro-scales, where the deformation behavior becomes rather erratic, and reveal spatial and temporal patterns in seemingly random plastic events. As an example, we present compression experiments on micron-scale Mg and Zn specimens performed using a unique experimental set-up capable of detecting weak acoustic signals of twinning and dislocation slip. Statistical analysis discloses non-trivial characteristics of deformation dynamics, which expand the fundamental understanding of deformation dynamics in crystalline materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Other, Other |